First report of Tomato spotted wilt virus in Argyranthemum frutescens in China.
Argyranthemum frutescens is a popular ornamental plant grown in public parks. In December 2018, 5% to 10% of plants, grown in a glasshouse in Shunyi District, Beijing, China, showed virus-like symptoms, such as yellowing, mottling and internode shortening. Leaves collected from six symptomatic plants were tested for several common viruses that infect ornamental plants including Cucumber mosaic virus (CMV), Tobacco mosaic virus (TMV), Tomato spotted wilt virus (TSWV), and Impatiens necrotic spot virus (INSV) by DAS-ELISA. Among the naturally infected A. frutescens plants, only TSWV was detected. TSWV was further confirmed based on nucleotide sequence analysis. This is thought to be the first report of TSWV infections in A. frutescens in China.